Electrical connector.



EL E. ROSE & 0. A. COLBY.

Patented Oct. 2, 1917.

` a resident of Wilkinsburgin the county of' y curling-irons and other similar apparatus EDWARD ROSE, 0F SWISSVALE, AND GRA A. GOLBY, 0F WILKINSBURG, PENNSYL- VARIA, ASSIGNOIRS TO WESTINGHOUSE ELECTRIC AND MANUFACTURING COM- IPANY, `A CORPORTXDN 0F PENNSYLVANIA..

l ELECTBLCAL CONNECTOR.

Specicatozi of Letters letent.

` Application mes remembers, iets. serial no. recava To all wwm it may con'cem Be it known that we, EDWARD E. Rosa, a citizen of the United Stateaand a resident of Swissvalc, Ain the county of Allegheny and State of Pennsylvania, and ORA A'. COLBY, a citizen of; the United States, and

Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Electrical Connectors, of which the following is a specification.

Our invention relates to electrical connectors, and it has special reference to detachable plug-connectors for use in curling- -irons and the like.

The object of our invention is to provide a device of the above-indicated character which shall be simple, durable and inexpensive in construction and reliable and convenient in operation. ,y

-Heretofore, the detachable plug-connectors provided for embodiment in electrical have been relatively expensive and more or less complicated or delicate in construction,

' thereby entailing high cost of maintenance and unsatisfactory operation.

Accordmg to our invention, we provide a l swiveling detachable plug-connector for the above-mentioned purposes that ,embodies features which collectively obviate the dis f advantages 'hereinbefore mentioned.

n the accompanying drawing, Figure l is a view in elevation, with parts broken away, of an apparatus embodying an electrical connector constructed in accordance with our invention; and Fig. 2 is a view, partially in longitudinal section, on the line II-II of Fig.v 1 and partially in elevation at right angles to the'viewof Fig. l.

Referring to the `drawir' lg, the electrical connector shown comprises a pair of oppositely-dis'posed and suitably chambered supporting arts orshells 2, aipaiifk of sets '3 and-4 o contact members disposed vwithin the shells 2, and a plurality o resilient rings 5 and 6 for detachably joining the shells 2. The supportin shells 2 are of insulating and preferably o molded material, and are severally provided with portions 2a and 2l of relativelyv small and ott' larger diameter which respectively have relatively shallow and deeper internal recesses 7 and 8s The. shells 2 also have a pluralityof spaced eX- ternal grooves 9 and 10 that are respectively adapted to receive the resilient clamping rings 5 and 6. A centrally-located end open-- grooves 11, is provided in the assembled shells 2 for receiving and frictionally en-` gaging supply conductors l2.` A relatively narrow and deep internal groove 13 is disposed intermediate the ends of the smaller portion 2a of the shells 2 for a purpose lhercinaiter specified.

The set 3 of contact members comprises a pair of longitudinallyelined and suitablyv members 14 and l5 and Within the groove z13.'

The set 4 of contact members comprises a relatively short forked resilient contact clip or jaw 17 that is longitudinall -set at right angles to and concentrically .disposed Within the set 3 of contact members.l The unforked end 18 of the contact jaw 17 is supply conductor 12 and to one of thegshells 2 Within the recess 13. It will be linden.

Patented oet. 2, 1917.

oiiset and is suitably attached to the second stood from the foreging descriptions-that the sets 3 and Il of lcontact members are independent and are respectively adapted for connection to supply lines of. opposite polarity. l y n l The clampingr rings 5 and 6 are preferably of piano wire, or the like, and serve to detachably vassemblegthe shells'2, as hereinbefore described. 1 v

A heating-device, here shown Vfor illustrative purposes in association withthe connector as acurling iron', embodies a1 suitf ableheatena hollowhandle 21, terminal members 22' and23 for thetheatemthat exv tend into the hollow space in the handle,"

and my connector inserted within the hank dle 21 and having its sets of contact mein'- bers 3 and e respectively adapted tcrengalgfeg.

i androtateor `swivel around, the terminal members 22 and 23. I 1

The handle 21 has a centrally-located,

relatively large internal recess Within which 5 the small portions 2a of the shells 2 are adapted to lit and a contiguous recess 25 of smaller diameter, within which is dis nosed a ring 29, thereby forming an internal s oull i der 26, for a purpose to be specified. The l0 terminal members 22 andv 23 extend into the large recess and are concentrically related, the outer member constituting'a suitably 'shaped shelland the inner member constituting arod insulated from and projecting beyond the outer shell. y

'Ihe outer termina] member 22 has .an .exe ternal groove 27 near its inner end and an external flange`28 intermediate its ends. In o erative position, the external flange 28` a uts against the internal shoulder 26 and the groove 27 `falls Within the recess 25. The ring 29 is disposed around they terminal member 22 Within the recess 25 and-has a luralit of threaded openin s disposed in P y g alinement with the groove 27 and which are adapted to `register lvvith corresponding openings 3l in the handle 21. A plurality o screws 32 extend through the openings 31 and engage the roove 27, thereby ing movement o the heater.

It will be noted that the above-described construction allowsmf a swiveling of the curling-iron with r'espect to the plug-connector. By holding stationary the portion prevent- "movement to the handle'21', this swiveling action, which is very desirable in the-use of curling-irb'n's,` may. be y"readily obtained and without breaking the electrical connec- Qlton's, since theV terminal members22 land 23 turn' smoothly and easily withi'the'sets of contact members `3 and/4, respectively. Y We do not Wish to be restricted to the g Aspecific structural details herein set` forth, .1li but desire that only such limitations shall 1 be imposedas are indicatedin the appended claims.

, We claim as our invention: Y p Il.` An electrical connector comprisingop-- ositely-disposed supporting parts ofinsuating material'each having a plurality-of external grooves and a relatively shallow and a deeperinternal recess, -a plurality ofv contactcllps` severally having one end at- .L tached within the deeper recesses for connection to fani externalsource of electrical energy and a plurality of clampingrings detachablygdisposed in the said grooves.

2. In angelectrical apparatus, the combien nationwith a plurality of' terminal members, oneofwhich has an external .groove therein, of an electrical connentor'eompris- Jing a `plurality 'of sots 4o' concentrically `disposed and independent resilient 'con-` 05 tact members, said contact members beingA 2P of the connector and imparting a rotative.

adapted for4 rotative engagement with the said. terminal members `and one set of the said Contact members being provided with bent ends for engaging the groove in one of the terminal members to secure the same together. 3. Ina-n electrical apparatus, the combination with a base member, of a plurality `ot' concentrically related` terminal members,

means for securing the terminal members 1n the base member 1n any desired position,

and coperating contact members for engaging the said terminal members.

4. In an electrical apparatus, the combination with a base member, of a plurality of concentrically related terminal members, one of which has a circumferential groove therein, means for adjustably securing `the terminal members `in the base member, and coperating concentrically disposed contact members for engaging the said terminal members, the said vcontact members being adapted to grip the groove in the terminal member to retain the same in engagement.

5. In an electrical apparatus, the combination with a base member having an internal recess therein, of concentric contact Lmembers disposed Within the recess, an an- `nular member disposed within the recess in the Ibase member, one of the terminal "members being provided with an evternal groove and a projection for engaging the said shoulder, an annular member surrounding the said terminal members, and radially adJustable means extending through the said annular member and the said base member for engaging the groove in the terminal member to retain the same in any predetermined position. l

7. An electrical connector comprising op- I positely disposedsupportingparts of insulatng material each havingy a relatively shallow and a deeper internal recess, and

two pairs of substantially fiat contact mem-A bers` severally having one end attached within the deeper recesses for connection "u an external source of electrical energy, the normal distance betweeny the lower ends of the respectivecontact members of each pair bein relatively different.

8, An e ectrical connector comprising oppositely disposed supporting parts of insulating material each having a relatively .shallow and a deeper internal recess, and

two pairs of substantiallv Hat nnnmnf. mambers sevemuy having one end attached subscribed our. names this 31st @ley of Oct.,

Within. the deeper recesses for connection to 1913.

'an external source of electrical energy, the

vEDWARD E. ROSE'. ORA A. COLBY. Witnesses: s Y.

W. L., WRIGHT, B. B. HINES. 

